*{
    padding: 0;
    margin: 0;
}
li{
    list-style: none;
}
header{
    background: lightcoral;
}
h2{
    padding: 15px 0;
}
section,header h2{
    width: 80%;
    margin: auto;
}
li{
    border-bottom: 1px #cccccc solid;
    padding: 15px 0 15px 0;
    line-height: 40px;
    vertical-align: middle;
}
.one{
    border-bottom: 1px #ccc solid;
    vertical-align: middle;
    display: flex;
}
.a{
    padding-top: 15px;
    padding-right: 25px;
}
.one input{
    width: 60%;
    border: none;
    outline: none;
    height: 50px;
    font-size: 18px;
}
button{
    float: right;
    width: 80px;
    height: 40px;
    border: none;
    outline: none;
    background: #ffc0b2;
    color: #7b7b7b;
    margin-left: 15px;
}
li:before,
li:after{
    display: table;
    clear: both;
    content: "";
}
.span1{
    width: 20px;
    height: 20px;
    border: 3px #ef5c5c solid;
    margin-right: 50px;
    display:block;
    border-radius: 50%;
    margin-top: 8px;
}
.span1,.span2{
    float: left;
}
.span3{
    text-decoration: line-through;
}